/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.hortonworks.registries.storage.search;

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;

import java.io.Serializable;

/**
 *
 */
@JsonIgnoreProperties(ignoreUnknown = true)
public class Predicate implements Serializable {
    private static final long serialVersionUID = 3928533466168563000L;

    public enum Operation {EQ, LT, GT, LTE, GTE, CONTAINS}

    private String field;
    private Object value;
    private Operation operation;

    private Predicate() {
    }

    public Predicate(String field, Object value, Operation operation) {
        this.field = field;
        this.value = value;
        this.operation = operation;
    }

    public String getField() {
        return field;
    }

    public Object getValue() {
        return value;
    }

    public Operation getOperation() {
        return operation;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        Predicate predicate = (Predicate) o;

        if (field != null ? !field.equals(predicate.field) : predicate.field != null) return false;
        if (value != null ? !value.equals(predicate.value) : predicate.value != null) return false;
        return operation == predicate.operation;
    }

    @Override
    public int hashCode() {
        int result = field != null ? field.hashCode() : 0;
        result = 31 * result + (value != null ? value.hashCode() : 0);
        result = 31 * result + (operation != null ? operation.hashCode() : 0);
        return result;
    }

    @Override
    public String toString() {
        return "Predicate{" +
                "field='" + field + '\'' +
                ", value=" + value +
                ", operation=" + operation +
                '}';
    }
}
